Pressure-bearing device non-stop magnetic flux leakage nondestructive testing system
A technology for pressure-bearing equipment and non-destructive testing, applied in the direction of material magnetic variables, etc., can solve the problems of labor-consuming and time-consuming testing, be easily affected by operators, increase safety risks, etc., achieve strong innovation and practical value, good application prospects, The effect of high detection accuracy
Pending Publication Date: 2019-04-05
CHINA JILIANG UNIV
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Problems solved by technology
However, most of the existing magnetic flux leakage detection instruments are manual, which is labor-intensive and time-consuming, and is easily affected by operators. When working at heights, scaffolding needs to be built, which not only increases the detection cost, but also increases safety risks. downtime detection
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[0022] Such as figure 1 , figure 2 , image 3 As shown, a non-destructive detection system for non-stop magnetic flux leakage of pressure equipment: consists of a sensor (1), a photoelectric pulse encoder (2), a wheel (3), a driving wheel (4), a motor (5), and a signal processing module ( 6), vehicle frame (7), programmable controller (8), sensor (1) is made up of magnetization device (9), magnetic induction device (10), includes on the magnetic induction device (10), Hall element array (12), magnetic concentrator (13). It is characterized in that: the motor (5) provides the forward and backward power for the device; the driving wheel (4) is connected to the frame (7), the four wheels (3) support the frame (7), and the photoelectric pulse encoder ( 2) It is set at the drive wheel (4) to extract the signal of the number of turns of the drive wheel (4), thereby determining the driving position; the programmable controller (8) is programmed by a single-chip microcomputer, and...
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The invention discloses a pressure-bearing device non-stop magnetic flux leakage nondestructive testing system. The pressure-bearing device non-stop magnetic flux leakage nondestructive testing systemcomprises a sensor, a photoelectric coded device, vehicle wheels, driving wheels, a motor, a signal processing module, a vehicle rack, a programmable controller, a magnetizing device, a magnetic induction device, a hall element array and a magnetism assembling device. The motor provides power for advancing and retreating, the driving wheels are connected to the vehicle rack, the four vehicle wheels bear the vehicle rack, rotated cylinder number of the driving wheels are extracted by the photoelectric coded device, and positions of driving are determined; the advancing and retreating of the device are controlled by the programmable controller, and thus automatic clawing of the device is realized. Inspected objects are magnetized by the magnetizing device, and the hall element array picks up a leakage magnetic field and converts the leakage magnetic field to electric signals. The magnetism assembling device leads the leakage magnetic field to the detecting path of the hall element array. Collected signals are transmitted to a computer through a WIFI unit on the signal processing module. A pressure-bearing device can be non-stop, wirelessly and automatically detected. The pressure-bearing device non-stop magnetic flux leakage nondestructive testing system has great practical values and application prospects.
Description
technical field [0001] The invention belongs to the technical field of non-stop detection of large-scale pressure equipment, and in particular relates to a non-destructive detection system for non-stop magnetic flux leakage of pressure equipment. Background technique [0002] Pressure equipment includes boilers, pressure vessels and pressure pipelines, which are widely used in industries such as petroleum, chemical industry, electric power, metallurgy, pharmaceuticals, and urban public utilities. The working environment of large pressure equipment often has high temperature, high pressure, cryogenic, large-scale Features. [0003] These devices are very likely to cause accidents due to equipment overload, overdue service, and insufficient regular maintenance. Once a leakage or explosion accident occurs, the consequences will be extremely serious. Therefore, ensuring its safe operation is crucial to ensuring energy security and people's daily life. In the past, the method of...
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IPC IPC(8): G01N27/83
CPCG01N27/83
Inventor 徐玮鑫沈常宇刘泽旭
Owner CHINA JILIANG UNIV